i created an esriaddin with dockpanel (for desktop using c# wpf) and installed it to another computer. the problem occur when i install the updated version of the addin ( it installed successfully ) but it does not update the interface, it retain the previous interface. even if i remove the addin and reinstallled it, it displays the same old interface.
How did you install the add-in? ArcGIS Pro has a sequence of where to look for addins. I have seen this before where the updated one was in a folder defined in the addins location config and the old one was still in the Documents folder which happens to be the last place to load from and therefore my old addin was being loaded again.
I can't remember the sequence but it's documented in the SDK github pages somewhere
